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A053444 x^2 + y^2 mod A053443(n) does not take on value a(n). 2
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 7, 3, 3, 3, 3, 3, 3, 3, 3, 11, 3, 3, 3, 3, 3, 3, 3, 3, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 11, 3, 3, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..5000

PROG

(PARI)

A053444list(up_to) = { my(v=vector(up_to), t, n=1, i=0); while(i<up_to, my(u=vector(n), ind); for(x=0, (n+1)\2, for(y=0, x, u[((x^2+y^2)%n)+1]=1)); if(0==vecmin(u, &ind), i++; v[i] = ind-1); n++); (v); };

v053444 = A053444list(up_to);

A053444(n) = v053444[n]; \\ Antti Karttunen, Nov 07 2018

CROSSREFS

Cf. A053443.

Sequence in context: A157831 A032552 A087717 * A175797 A243129 A135717

Adjacent sequences:  A053441 A053442 A053443 * A053445 A053446 A053447

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified March 26 18:36 EDT 2019. Contains 321511 sequences. (Running on oeis4.)